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I believe the term you are looking for is "hub-centric" vs "lug-centric" wheels. Everything else you stated is spot on!

Usually people don't understand hub-centric and lug-centric (not this forum's members) so I end up explaining what the terms mean anyway

Call it force-of-habit.

1. Do not copy anything that I post outside of the TMC forum without permission.
2. Any advice or opinions posted here are to be taken as my personal opinions only. There is no implied warranty, fitness for purpose, or official statements from any company I may have been or am affiliated with.
3. Even the best recommendations are wrong when used inappropriately.

1. Do not copy anything that I post outside of the TMC forum without permission.
2. Any advice or opinions posted here are to be taken as my personal opinions only. There is no implied warranty, fitness for purpose, or official statements from any company I may have been or am affiliated with.
3. Even the best recommendations are wrong when used inappropriately.

I too am considering going with 20" wheels (prob 245/40ZR20). Any idea when the speedometer needs to be recalibrated if there is a substantial difference in revs per mile (+/- 20 or so?) with the new tires? Looks like we've got the aftermarket rim specs figured out...

I too am considering going with 20" wheels (prob 245/40ZR20). Any idea when the speedometer needs to be recalibrated if there is a substantial difference in revs per mile (+/- 20 or so?) with the new tires? Looks like we've got the aftermarket rim specs figured out...

Just divide the RPM of the candidate tire by the RPM of the OE tire and come up with a percentage. It shouldn't be more than 2% higher or 5% lower.

1. Do not copy anything that I post outside of the TMC forum without permission.
2. Any advice or opinions posted here are to be taken as my personal opinions only. There is no implied warranty, fitness for purpose, or official statements from any company I may have been or am affiliated with.
3. Even the best recommendations are wrong when used inappropriately.

tire size

Originally Posted by bonehead

I too am considering going with 20" wheels (prob 245/40ZR20). Any idea when the speedometer needs to be recalibrated if there is a substantial difference in revs per mile (+/- 20 or so?) with the new tires? Looks like we've got the aftermarket rim specs figured out...

I found a tire size comparion at discounttire.com where you can put in your sizes

Also, TireRack has a number of tire options as a former post noted. My main question is: are the available replacement tires low-rolling resistant tires? I would think that the OEM tires are LRR in order to increase range.

Tesla chose performance tire sizes that have almost no LRR tires. The only one I've found so far is the winter tire Nokian Hakkapeliitta R: "The new Hakkapeliitta R has the lowest rolling resistance of any tire in Nokian Tyres product line." Why Tesla didn't design the Model S so that it could have sensibly sized tires/wheels where LRR is common--only as an option for those that want it--is beyond me.

1. Do not copy anything that I post outside of the TMC forum without permission.
2. Any advice or opinions posted here are to be taken as my personal opinions only. There is no implied warranty, fitness for purpose, or official statements from any company I may have been or am affiliated with.
3. Even the best recommendations are wrong when used inappropriately.